<!--
 * @Descripttion: 
 * @version: 
 * @Author: wl
 * @Date: 2020-07-03 14:27:42
 * @LastEditors: wl
 * @LastEditTime: 2020-07-06 16:52:13
-->
<template>
  <div class="chartNum">
          <div class="count">
       累计通行次数：
    </div>
      <div class="box-item">
          
        <li :class="{'number-item': !isNaN(item), 'mark-item': isNaN(item) }" v-for="(item,index) in orderNum"
          :key="index">
          <span v-if="!isNaN(item)">
            <i ref="numberItem">0123456789</i>
          </span>
          <!-- <span class="comma" v-else>{{item}}</span> -->
        </li>
      </div>
    

  </div>
</template>
<script>
  export default {
      
    data() {
      return {
        orderNum: ['0', '0', ',', '0', '0', '0', ',', '0', '0', '0'], // 默认订单总数
        totalAccount:'',
      }
    },
    mounted() {
        this.getCount()
    // 这里输入数字即可调用
      
    },
    methods: {
         //得到刷脸数据
      getCount(){
          
        	this.$api.home.handleQuery().then((res) => {
                
          if (res.code == 0) {
            this.totalAccount=res.data.total
            this.toOrderNum(this.totalAccount)
            
            
          } else {
            this.$message({ message: "操作失败, " + res.msg, type: "error" });
          }
        })
      },
      // 设置文字滚动
      setNumberTransform() {
        const numberItems = this.$refs.numberItem // 拿到数字的ref，计算元素数量
        const numberArr = this.orderNum.filter(item => !isNaN(item))
        // 结合CSS 对数字字符进行滚动,显示订单数量
        for (let index = 0; index < numberItems.length; index++) {
          const elem = numberItems[index]
          elem.style.transform = `translate(-50%, -${numberArr[index] * 10}%)`
        }
      },
      // 处理总订单数字
      toOrderNum(num) {
          
        num = num.toString()
        // 把订单数变成字符串
        if (num.length < 8) {
          num = '0' + num // 如未满八位数，添加"0"补位
          this.toOrderNum(num) // 递归添加"0"补位
        } else if (num.length === 8) {
          // 订单数中加入逗号
          num = num.slice(0, 2) + ',' + num.slice(2, 5) + ',' + num.slice(5, 8)
          this.orderNum = num.split('') // 将其便变成数据，渲染至滚动数组
        } else {
          // 订单总量数字超过八位显示异常
          this.$message.warning('订单总量数字过大，显示异常，请联系客服')
        }
        this.setNumberTransform()
      },
    }
  }

</script>
<style scoped lang='scss'>
  /*订单总量滚动数字设置*/
 .chartNum {
    width: 100%;
    display: flex;
    justify-content:center;
    justify-items: center;
    .count{
     font-size: 18px;
      line-height: 100px;
    }
  }

  .box-item {
    position: relative;
     margin: 15px 20px;
    // height: 100px;
    // width: 100%;
    font-size: 30px;
    line-height: 41px;
    
    list-style: none;
    color: #00ffff;
    writing-mode: vertical-lr;
    text-orientation: upright;
    /*文字禁止编辑*/
    -moz-user-select: none;
    /*火狐*/
    -webkit-user-select: none;
    /*webkit浏览器*/
    -ms-user-select: none;
    /*IE10*/
    -khtml-user-select: none;
    /*早期浏览器*/
    user-select: none;
    /* overflow: hidden; */
  }

  /* 默认逗号设置 */
  .mark-item {
    width: 10px;
    height: 100px;
    margin-right: 5px;
    line-height: 10px;
    font-size: 48px;
    position: relative;

    &>span {
      position: absolute;
      width: 100%;
      bottom: 0;
      writing-mode: vertical-rl;
      text-orientation: upright;
    }
  }

  /*滚动数字设置*/
  .number-item {
    width: 32px;
    height: 63px;
    background: #ccc;
    list-style: none;
    margin-right: 5px;
    background: #021a3e;
    border-radius: 4px;

    &>span {
      position: relative;
      display: inline-block;
      margin-right: 10px;
      width: 100%;
      height: 100%;
      writing-mode: vertical-rl;
      text-orientation: upright;
      overflow: hidden;

      &>i {
        font-style: normal;
        position: absolute;
        top: 15px;
        left: 50%;
        transform: translate(-50%, 0);
        transition: transform 1s ease-in-out;
        letter-spacing: 10px;
      }
    }
  }

  .number-item:last-child {
    margin-right: 0;
  }

</style>
